Cutting tool



@CL 27, 1931. s,b E TAFT 1,829,200

CUTTING TOOL Filed July 9. 1929 Invew/Loz: Say/@@3163 EfTotej- U @WMwww.

Patented Oct. 27, 1931 UNTTED STATES PATENT ori-ics SYDNEY E. TAFT, OFFRAMINGHAM, MASSACHUSETTS, ASSIGNOR TO GULLIFORD WOOD HEEL COMPANY, OFLYNN, MASSACHUSETTS, A FIRM COMPOSED OF ARCHIBALD T.

G-'ULLIFORD AND PEARCE H. GULLEFORD CUTTING TOOL y Application filedJuly 9,

This invention aims to provide an improved adjustable cutter forwoodworking machinery and in the accompanying drawings I have shownmerely for illustrative purposes one embodiment vof the invention,wherein Fig. l is a side eleva-tion of the cutter;

Fig. 2 is a transverse section on the line 2-2 ot Fig. l;

Fig. 3 is a detail section taken on the line 3 3 ot 2; and

Fig. 4 is a detail side elevation ot the cutter blade gauge.

In the 4drawings l have shown the invention in the form of a rotarycutter that is particularly designed tor use iu turning wood heelsalthough the invention is not limited to such use.

llhen usedtor turning heels the vedges et the cutting blades describeapproximately S- curves whereby when a heel block is moved intooperative relation with the critter' the sides and rear portions ot theheel block will gradually assume the desired shape.

The cutter blades 4, only two el which are shown in the drawings, aredesirably placed upon opposite sides of the axis of the cutter inrecesses 5 arranged tangential to a circle struck from the axis of thecutter and formed in the body et a cut-ter helder or head 6.

The recesses 5 desirably extend laterally through the cutter holder andlongitudinally thereof for the greater portion of its length to the end7, forming a central portion 8 and side or wing portions 9 and 10.

To prevent the spreading ot the wing portions 9 and l() from the centralportion 8 when pressure is applied to secure the cutters in place a capplate l2 is provided herein with an annular rim 14 which overlies andengages complementary portions 16 formed upon said holder 6.

The cutter blades 4 are arranged one within each recess 5 preferablyagainst the inner surfaces 18 of said wings 10, and are clamped againstsaid surfaces by a combined clamping and stripping plate 20 havingapproximately the same outline as said cutting blades.

One edge at least of each blade 4 is, as hereinbefore stated,approximately S-shaped as 1929. semi No. 376,914.

best shown at 22 in Fig. l, and projects slightly beyond the peripheryof the holder 6. The latter being similar in forni and only slightlyremoved from the edge 22, it serves as a guard to prevent workmen fromaccidentally A inserting their fingers far enough between the cutterblades while rotating to sever them. The mostthat could happen is theshaving oil et portions ot'rthe flesh ot the fingers.

The et ge of the clamping plate 20 that is shaped like the cutting edge22 is chamtered at 24 to serve as a chip breaker tor the materialremoved by the cutter blade from the block. Furthermore, said clampingplate is considerably thicker than the cutter blade and is held againstmovement within the recess 5 radially ot said holder, desirably, bytongue and groove, one of which, herein the tongue 26, is Jformed uponthe central part 9 of the holder G, the groove 28 being formed in theadjacent tace of the clamping plate. The invention, however, is notlimited to the speciic means for preventing radial movement of saidclamping plate.

Pressure is applied to each clamping plate 20, desirably by screws 30having screwthreaded engagement at one end with said plate and engagingat their other end 82 with the adjacent wall of the portion 8 of saidholder against which pressure is exerted by sa-id screws to force theclamping and cutter plates toward the opposite wall of the recess.

The cutter blades 4 are shorter than the recesses 5, measuredlongitudinally of the axis of the cutter, in order to permit the cutterblade to be tipped to different angles relatively to said axis.

ln order accurately to adjust the cutting blades within their respectiverecesses so that the cutting edges ot' all blades will properly alignand cut equally, said blades are made uniform in size and shape andtapering menibers or gauges 36 are provided one for insertion beneatheach cutter blade and the lower end et its recess. These gauges are ofuniform taper and thickness and means are provided for positioning saidgauges in the same radial relation to the axis oi the cutter. Forexample, l provide each gauge with a lUU lug projecting downward fromthe gauge 36 into a hole 43 formed in the lower end of the recesso. Byfirst placing the gauge in the recess 5 and inserting'its lug in thehole l 43, then by placing the cutter in itsrecess, said gauge will beheld in place during the operation of the cutter. The gauge 3G isslightly shorter or atleast no longer than the recess Y thickness to thewidth of the recess 5 so that form shown.V

there will be no sidewiseor swinging movements of said gauges therein.VY

A different set of gauges willbe provided foreach type or'form of cutterand all'cf the gauges of each set will be substantially identical inorder to -insure all cutter blades performing an equal amount of work,and the set of gauges selected will remain in the cut-Y ter head duringits operation to assist in maintaining the cutter blades inproper'positions.

To assist in removing the gauges from the holder the larger ends thereofare cut under at 4l to permit a screw driver or similar tool to beinserted vtherebeneath and to raise it from its seat. f y y.

The plate l2 is shown'attached to the holder 6 by screws 42 extendingthrough said plate and into'V engagement with the portions 9 and 'lO ofthe holder. If desired, however, the Vscrews 42 may be dispensed withand the plate be ysecured in its position upon the holder merely by themeans which secures the cutter to the arbor 44, which herein consists ofanut'54 engaging a screw-threaded portion 52V of the said arbor, andwhich forces said cutter head against a shoulder 46,

The invention lis not limited to theY specific Claims:

l. A rotary cutter comprising a cutter holder having lateral recesses,`a cutter'arranged in each recess and movable longitudinally andlaterally therein, a series of wedges of uniform angularityone for eachrecess vto tilt said cutters to predetermined angles with respect to theface of said cutterY holder,

means toposition said wedgesin uniform positions radially in theirrespective recesses, including lugs and cooperating recesses in saidwedges and cutter holder respectively, and individual clamping meansforsaid cutters. 2. A rotary cutter comprising a cutter blade, a cutterholder comprising a peripheral face substantially conforming with theico contour of said cutter blade, means to clamp means tofvarythe Yangular relation of the cutting edge of said said cutter in said holder,

cutter blade withthe peripheral face Vof, said cutter holder, includinga wedge shaped @f3 member provided with a lug to hold said wedge in apredetermined position relatively to said holder. Y i f.

3. A rotary cutter comprising cutter blades,` a cutter holder havinglateral recesses to receive said cutter-blades, means to position saidblades in said recesses withl their cutting edges arranged atpredetermined angles Vwith respect to said holders, said means includingtapered y,members arranged between said cutter blades and ,said holder,

I'means to position said tapered members in uniform relation withrespect to said holder including cooperating lug and recess iii saidtapered member and holder, and means to 1 clamp said cutter blades insaid holder.

4.' A cutter 'comprising a holder, ka plurality of adjustable'cutterblades,- ytapered elements arranged beneath said bladestol in'- Y clinetheV same to selected angles, means to secure said blades in adjustedpositions, and means to position said blade longitudinally including alug arranged to lit a recess formed in said holder. Y

5. A cutter comprising a plurality of adinstable cutter blades, aholder, removable elements for inclining said cutter blades at selectedangles in saidholder, andnieans to position said removableelementslongitudinally, including cooperating lug and recess members onsaid holder and removable elements respectively.

In testimony whereof, I name to this specification.

have signed SYDNEY fii. Tiiiir.

iio

